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System and method for synthesizing leads of an electrocardiogram

An electrocardiogram and lead technology, applied in the field of systems and methods for synthesizing electrocardiogram leads, can solve problems such as unfamiliarity among clinical staff

Inactive Publication Date: 2005-09-14
戴维·M·史瑞克
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Dower in U.S. Patent No. 4,850,370 utilizes the Frank VCG 3-lead system to derive a 12-lead ECG, however, this system is unconventional and unfamiliar to most clinical staff

Method used

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  • System and method for synthesizing leads of an electrocardiogram
  • System and method for synthesizing leads of an electrocardiogram
  • System and method for synthesizing leads of an electrocardiogram

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Embodiment Construction

[0037]A complete cycle of cardiac beating is represented by a wave called the PQRST wave, Einthoven, translated by H.E. Huff and P. Sekelj, reprinted in Am. Heart J. 40:163, 1950, Arch. Ges Phys. The PQRST wave is defined in 150:275, 1973. The PQRST wave represents complete contraction and relaxation of the heart. Figure 5 An example of a PQRST wave is shown in . A complete cardiac cycle averages 1 / 72 second.

[0038] figure 1 The flow chart shown describes the overall process of synthesizing and using the general transformation matrix of the present invention. The first step shown in block 101 is to acquire a sequence of digitized voltage-time data for leads I, II and V2 over a complete cycle. Multiple datasets can be acquired, each typically containing up to 300 measurements. In block 102, lead aVF may be calculated from the known geometry of leads I and II. exist figure 2 In step 202, the formula for generating lead aVF from leads I and II is shown. Alternativ...

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Abstract

A method for synthesizing electrocardiogram leads includes obtaining a sequence of voltage-time measurements for a set of electrocardiogram leads and subjecting the measurements to abstract factor analysis to obtain a set of eigenvalues and associated eigenvectors. A minimal subset of electrocardiogram leads is identified from which the voltage-time measurements can be calculated with acceptable error. Simplex optimization is performed on a subset of the voltage-time measurements measured with the minimal subset of electrocardiogram leads to obtain a universal transformation matrix, and the universal transformation matrix is multiplied by the subset of the voltage-time measurements to calculate the full set of voltage-time measurements. The full set of leads can be used to calculate a body surface map, and the eigenvalues can be tracked in time to predict the onset of pathology such as myocardial infarction.

Description

technical field [0001] The present invention relates to the synthesis of an electrocardiogram ("ECG") lead from 3 measurement leads subordinate to a routinely used set of leads comprising a standard 12 lead ECG, the present invention relates to visually presenting a body surface potential map ("BSM") from an n-lead ECG derived from 3 measured leads, and to using calculations of ECG eigenvalues ​​to predict The development of the pathology of acute myocardial infarction (more commonly referred to as "heart attack"). Background technique [0002] An electrocardiogram (ECG), a recording of the electrical activity of the heart, is a commonly used diagnostic screening test in many medical settings. A standard ECG recording consists of 12 lead waveforms, denoted I, II, III, aVR, aVL, aVF, V1, V2, V3, V4, V5, and V6, and arranged in a specific order utilized by the physician Pattern recognition techniques to explain. The ECG is obtained by specially trained technicians using pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/308A61N1/04
CPCA61B5/0402A61B5/04028A61B5/327A61B5/318
Inventor 戴维·M·史瑞克
Owner 戴维·M·史瑞克
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